/*
* ======== strm_allocate_buffer ========
* Purpose:
* Allocates buffers for a stream.
*/
int strm_allocate_buffer(struct strm_res_object *strmres, u32 usize,
u8 **ap_buffer, u32 num_bufs,
struct process_context *pr_ctxt)
{
int status = 0;
u32 alloc_cnt = 0;
u32 i;
struct strm_object *stream_obj = strmres->stream;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(ap_buffer != NULL);
if (stream_obj) {
/*
* Allocate from segment specified at time of stream open.
*/
if (usize == 0)
status = -EINVAL;
} else {
status = -EFAULT;
}
if (status)
goto func_end;
for (i = 0; i < num_bufs; i++) {
DBC_ASSERT(stream_obj->xlator != NULL);
(void)cmm_xlator_alloc_buf(stream_obj->xlator, &ap_buffer[i],
usize);
if (ap_buffer[i] == NULL) {
status = -ENOMEM;
alloc_cnt = i;
break;
}
}
if (status)
strm_free_buffer(strmres, ap_buffer, alloc_cnt, pr_ctxt);
if (status)
goto func_end;
drv_proc_update_strm_res(num_bufs, strmres);
func_end:
return status;
}
/*
* ======== node_alloc_msg_buf ========
* Purpose:
* Allocates buffer for zero copy messaging.
*/
DBAPI node_alloc_msg_buf(struct node_object *hnode, u32 usize,
struct dsp_bufferattr *pattr,
u8 **pbuffer)
{
struct node_object *pnode = (struct node_object *)hnode;
int status = 0;
bool va_flag = false;
bool set_info;
u32 proc_id;
DBC_REQUIRE(refs > 0);
DBC_REQUIRE(pbuffer != NULL);
DBC_REQUIRE(usize > 0);
if (!pnode)
status = -EFAULT;
else if (node_get_type(pnode) == NODE_DEVICE)
status = -EPERM;
if (status)
goto func_end;
if (pattr == NULL)
pattr = &node_dfltbufattrs; /* set defaults */
status = proc_get_processor_id(pnode->hprocessor, &proc_id);
if (proc_id != DSP_UNIT) {
DBC_ASSERT(NULL);
goto func_end;
}
/* If segment ID includes MEM_SETVIRTUALSEGID then pbuffer is a
* virt address, so set this info in this node's translator
* object for future ref. If MEM_GETVIRTUALSEGID then retrieve
* virtual address from node's translator. */
if ((pattr->segment_id & MEM_SETVIRTUALSEGID) ||
(pattr->segment_id & MEM_GETVIRTUALSEGID)) {
va_flag = true;
set_info = (pattr->segment_id & MEM_SETVIRTUALSEGID) ?
true : false;
/* Clear mask bits */
pattr->segment_id &= ~MEM_MASKVIRTUALSEGID;
/* Set/get this node's translators virtual address base/size */
status = cmm_xlator_info(pnode->xlator, pbuffer, usize,
pattr->segment_id, set_info);
}
if (!status && (!va_flag)) {
if (pattr->segment_id != 1) {
/* Node supports single SM segment only. */
status = -EBADR;
}
/* Arbitrary SM buffer alignment not supported for host side
* allocs, but guaranteed for the following alignment
* values. */
switch (pattr->buf_alignment) {
case 0:
case 1:
case 2:
case 4:
break;
default:
/* alignment value not suportted */
status = -EPERM;
break;
}
if (!status) {
/* allocate physical buffer from seg_id in node's
* translator */
(void)cmm_xlator_alloc_buf(pnode->xlator, pbuffer,
usize);
if (*pbuffer == NULL) {
pr_err("%s: error - Out of shared memory\n",
__func__);
status = -ENOMEM;
}
}
}
func_end:
return status;
}
